is this a complete edition with all the add ons?

I too would like a better explanation of all that's available in the total edition.

Someone said in another thread that it doesn't have all the available addons for this game.

Total Conflict Edition doesn't include the following things as of December 2021:

Steel Division 2 - Back To War Pack (Additional units usable only for multiplayer)

Steel Division 2 - Tribute to D-Day Pack (Same as Back to War, only additional multiplayer units)

Also the 3 paid Nemesis DLC are not part of the Total Conflict Edition and, as far as I know, they also only add new units for multiplayer.

So, the only singleplayer DLC not included is:

Steel Division 2 - Burning Baltics (Latest new Army General campaign which is not part of the history pass and thus not part of the Total Conflict Edition)

That's good to know
but what about the other features of it like these and if they are worth spending more to get?

battle log
streaming overlays
tactical guide
technical sheets